This a version, though not Larry Cunningham's.
I know I've got the single by him somewhere but God know where it is.
If you want his exact version let me know.

regards
Mick Bracken

Last night I had a pleasant dream, I woke up with a smile
I dreamt that I was back again in dear old Erin's Isle
I thought I saw Lough Allen's banks in the valley down below
It was my lovely Leitrim where the Shannon waters flow

I felt enchanted by the scene of grandeur and delight
So I strolled on to Carrick Town before the dark of night
I passed Sheemore, that fairy hill where the flowers fine do grow
And I saw the grave of Finn MacCool where the Shannon waters flow

I next did visit Fenagh town with her ancient Abbey walls
Where the teaching of the holy monks once echoed through her halls
I stood with reverence on the spot reluctant for to go
From the town of saints and sages where the Shannon waters flow

My eyes are dimmed and wet with tears, I must be dreaming still
I thought I saw those heroes who died on Sefton Hill
But the fog is lifting from the scene and I am forced to go
And leave the land so fair and grand where the Shannon waters flow

In all the lands that I have been throughout the East and West
In all the lands that I have seen I love my own the best
And if I ever return again the first place I will go
Will be to lovely Leitrim where the Shannon waters flow